Performance considerations for photogate based active pixel sensors (2009)
Spickermann, A., Hosticka, B.J., Grabmaier, A.
Photogate based active pixel sensors (PG APS) are often used in CMOS imaging. In advanced applications (e.g. high-speed imaging or time-of-flight distance measurements) the pixel performance...
Scannerless 3D-ToF-sensors (2009)
In this talk the state of the art of "scannerless" 3D-Time-of-Flight sensors is presented. The principle, different realization approaches, performance limits, possible technology realizations,...
H. Hahn, D. Timmermann, B. J. Hosticka, B. Rix
One of the main problems of the CORDIC algorithm is the limited convergence domain, in which the functions can be calculated. Two different approaches can be employed to overcome this constraint:...
Time-of-flight 3-D imaging pixel structures in standard CMOS processes (2008)
Durini, D., Brockherde, W., Ulfig, W., Hosticka, B.J.
In this investigation we examine different pixel structures and readout principles to be used in imagers fabricated in standard CMOS processes, for example, the 0.5 mu m and 0.35 mu m processes...
Charge-injection photogate pixel fabricated in CMOS silicon-on-insulator technology (2008)
Durini, D., Brockherde, W., Hosticka, B.J.
Concept, theoretical analysis, and experimental results obtained from a charge-injection photogate (CI-PG) pixel detector fabricated in CMOS silicon-on-insulator (SOI) technology are presented. The...
High sensitive UV-enhanced linear CMOS photosensor (2008)
Durini, D., Özkan, E., Brockherde, W., Hosticka, B.J.
This contribution describes a highly sensitive UVenhanced linear CMOS photosensor which exhibits very low noise. The sensor features on-chip readout and control electronics, global synchronous...
A CMOS Optical Sensor System Performing Image Sampling on a Hexagonal Grid (2007)
R. Hauschild, B. J. Hosticka, S. Müller, M. Schwarz
An integrated CMOS image acquisition system suitable for retinal information processing in bionic vision systems or product inspection has been developed and tested. It supports the readout of...
A Novel Analog Module Generator Environment (2007)
M. Wolf, U. Kleine, B. J. Hosticka
This paper describes a novel analog module generator environment for the automatic layout development of analog circuits. The C++ tool features a novel procedural layout description language that...
Detection of Defective Sensor Elements Using ΣΔ-Modulation ΣΔ and a Matched Filter (2007)
D. Weiler, O. Machul, D. Hammerschmidt, B. J. Hosticka
We present an integrable solution for detection of defective sensor elements using sigma-delta-(ΣΔ)modulation and a matched filter. The sensor element is stimulated using a pseudo random binary...
Microsystem technologies offer significant advantages in the development of neural prostheses. In the last two decades, it has become feasible to develop intelligent prostheses that are fully...
Photodetector structures for standard CMOS imaging applications (2007)
In this investigation we show how a standard 0.5µm twin-well CMOS process can be used for CMOS imaging. The process features a single-polysilicon layer, as well as three metal layers, and it is...
Theoretical and practical minimum of the power consumption of 3 ADCs in SC technique (2007)
Bechen, B., Boom, T. Van Den, Weiler, D., Hosticka, B.J.
In this paper the theoretical and practical minimum of the power consumption is investigated for 3 ADC architectures, which are predestined for low conversion speed and applications in low-power...
Technology-caused performance limitation of the common-gate LNA (2007)
Stücke, T., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper, the performance limitation of common-gate LNAs (CG-LNAs) caused by short channel effects is presented. The analysis is based on equations, which describes the behavior of the MOSFET...
SOI pixel detector based on CMOS time-compression charge-injection (2007)
Durini, D., Brockherde, W., Hosticka, B.J.
Concept and experimental results obtained from a pixel detector based on CMOS Time-Compression Charge-Injection-Devices (TC-CID) with a huge internal photocurrent amplification (~104), fabricated in...
Analog circuits for sensors (2007)
This contribution is devoted to CMOS analog circuit design for integrated sensor systems. While today complex sensor signal processing tends to be implemented in digital domain, analog circuits still...
A novel architecture for inductive proximity sensors using sigma delta modulation (2007)
Thoß, S., Machul, O., Hosticka, B.J.
This paper presents a novel architecture for inductive proximity sensors using sigma delta modulation. The LC-oscillator is included in the sigma delta control loop providing amplitude regulation and...
MOS-capacitor based CMOS time-compression photogate pixel for time-of-flight imaging (2007)
Durini, D., Brockherde, W., Hosticka, B.J.
In this investigation we study different readout possibilities if using a metal-oxide-semiconductor capacitor (MOS-C) as a photodetector in a standard 0.5µm twin-well CMOS process. The pixel readout...
Durini, D., Enowbi, K.E., Brockherde, W., Hosticka, B.J.
An experimental comparison between Time-Compression (TC) photogate pixel detectors fabricated in both, Silicon-on-Insulator (SOI) CMOS and 0.5µm standard CMOS processes, respectively, are presented...
Advanced time-of-flight range camera with novel real-time 3D image processing (2007)
König, B., Hosticka, B.J., Mengel, P., Listl, L.
We present a solid state fange camera covering measuring distances from 2 m to 25 m and novel real-urne 3D image processing algorithms for object detection, tracking and elassification based on the...
Noise considerations for a 64x8 pixel CMOS time of flight range sensor (2007)
Elkhalili, O., Brockherde, W., Hosticka, B.J., Schrey, O.M., Ulfig, W.
Noise analysis for a 64x8 pixel 3-D CMOS image sensor based on the time-of-flight (TOF) principle for car safety applications is presented. Due to low noise equivalent power (NEP) the sensor enables...
LNA for Low-Power, Low Data Rate PAN Applications (2006)
T. Stücke, N. Christoffers, R. Kokozinski, S. Kolnsberg, B. J. Hosticka
In this paper a common-gate LNA is presented, which is used in a low-power IEEE 802.15.4 receiver with severer requirements on the current consumption. The LNA is designed in a 0.25 μm CMOS...
B. Bechen, D. Weiler, B. J. Hosticka
This paper presents the development of a 10 bit very low-power CMOS SAR-ADC to be used in medical implants. The first part discusses the principle schematic and the requirements for component...
Neuartige Bildgebung durch Blut - Systemarchitektur eines kardiovaskulären Angioskops (2006)
Krisch, I., Kurzschenkel, M., Hosticka, B.J.
Bisher ist es weltweit noch nicht gelungen, ein Diagnosegerät zu entwickeln, das durch das Blut hindurch die Gefäßwände des kardiovaskulären Systems mit ausreichender Auflösung darstellen kann....
A 64x8 pixel 3-D CMOS time-of flight image sensor for car safety applications (2006)
Elkhalili, O., Schrey, O., Ulfig, W., Brockherde, W., Hosticka, B.J., Mengel, P., ...
For car safety applications a 64x8 pixel 3-D CMOS image sensor based on the time-of-flight principle (TOF) has been developed and successfully tested. The illumination source used is a pulse...
A very low-power CMOS 11-b cyclic A/D converter with mismatch compensation (2006)
Bechen, B., Weiler, D., Hosticka, B.J.
A 11-b CMOS cyclic A/D converter with very low-power consumption is presented. A method to reduce the effect of component mismatch is introduced, which significantly improves the accuracy. The...
LNA for low-power, low data rate PAN applications (2006)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper a common-gate LNA is presented, which is used in a low-power IEEE 802.15.4 receiver with severer requirements on the current consumption. The LNA is designed in a 0.25 µm CMOS...
Graphical optimization of common-gate LNA (2006)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper a novel optimization strategy for common gate LNAs (CG-LNAs) is presented. It based on the modeling of the MOSFET behavior with its intrinsic and extrinsic parasitics in all possible...
Bechen, B., Weiler, D., Boom, T. Van Den, Hosticka, B.J.
This paper presents the development of a 10 bit very low-power CMOS SAR-ADC to be used in medical implants. The first part discusses the principle schematic and the requirements for component...
Fedtschenko, T., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In modernen drahtlosen Systemen sind niedriger Stromverbrauch und das Betreiben bei niedriger Spannung (Low Voltage Operation) von entscheidender Bedeutung. Dabei ist für viele elektronische...
The impact of technology parameters on the performance of common-Gate LNAs (2006)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper the impact of short channel effects on the performance of common-gate LNAs (CG-LNAs) is presented. It based on the modeling the MOSFET behavior including its intrinsic and extrinsic...
A low power, variable gain common-gate LNA (2006)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper a novel variable gain common-gate LNA is presented, which features adaptive gain dependent bias current. The CG-LNA is designed in a 0.25 µm CMOS technology and consumes only 831 µA...
Optical time-of-flight sensors for solid-state 3D-vision (2006)
Hosticka, B.J., Seitz, P., Simoni, A.
This contribution is devoted to "scannerless" optical time-of-flight (TOF) ranging techniques for three-dimensional (3D) vision. Classical optical TOF-3d-techniques employ laser ranging and rotating...
Durini, D., Kemna, A., Brockherde, W., Hosticka, B.J.
In this work, theoretical modeling and simulations of a 'time compression' parametric amplification pixel array to be used in CMOS imaging for low-level or near IR radiation are presented. The...
Three-dimensional CMOS image sensor for pedestrian protection and collision mitigation (2006)
Mengel, P., Listl, L., König, B., Toepfer, C., Pellkofer, M., Brockherde, W., ...
Future car safety systems increasingly depend on the availability of robust sensors with vital improved technical perception output. For this objective, we develop a pulsed laser based time of flight...
A high dynamic range current-mode amplifier for computed tomography (2006)
Steadman, R., Vogtmeier, G., Kemna, A., Ibnou Quossai, S., Hosticka, B.J.
In this paper, we show a high dynamic range current-mode detector for computed tomography application. A regulated current mirror structure has been implemented at pixel level that provides with 17...
An in-pixel current-mode amplifier for computed tomography (2006)
Steadman, R., Vogtmeier, G., Kemna, A., Hosticka, B.J.
A high-dynamic-range current-mode detector for a computed-tomography application is shown. A regulated current-mirror structure that provides a 17-bit dynamic range and a noise floor below 3 pA(rms)...
Christoffers, N., Lerch, R.G., Hosticka, B.J., Kolnsberg, S., Kokozinski, R.
Current-mode-logic circuits play an important role in the design of CMOS frequency synthesizers for modern wireless digital communication systems. They provide the building blocks for frequency...
High dynamic range CMOS camera for automotive applications (2005)
Brockherde, W., Nitta, C., Hosticka, B.J., Krisch, I., Bußmann, A., Wertheimer, R.
We have developed a CMOS camera featuring high sensitivity and high dynamic range which makes it highly suitable for automotive applications. The camera exhibits a 768x76 pixel resolution and a...
Weber, R., Jordan, M., Christoffers, N., Hosticka, B.J.
Direct-conversion receivers have attracted increased attention recently as they represent an interesting receiver topology in portable wireless environments, where power, cost, and size are critical...
Integrated CMOS active pixel sensor with low capacitance large area photodiodes (2005)
Kemna, A., Brockherde, W., Hosticka, B.J., Özkan, E., Steadman, R., Vogtmeier, G.
A novel CMOS X-ray active pixel sensor for indirect C.T. X-ray detection has been developed. A Cadmium tungstate (CdWO4) scintillator array glued on top is used is for the X-ray to light conversion....
A high dynamic range, high linearity CMOS current-mode image sensor for computed tomography (2005)
Steadman, R., Vogtmeier, G., Kemna, A., Ibnou Quossai, S., Hosticka, B.J.
In this work we show a high dynamic range current-mode detector for computer tomography applications. A regulated current mirror structure has been implemented at pixel level that provides with 17...
Bitte recht freundlich ... Smarte Kamerasysteme in der Medizintechnik (2004)
Wegen der sprunghaften Entwicklungen der Halbleitertechnologie können heutzutage effifiziente Mikrosysteme für verschiedene Anwendungsbereiche entwickelt werden. Dabei bietet die CMOS-Technologie...
High-sensitivity, high-dynamic range 768 x 576 pixel CMOS image sensor (2004)
Brockherde, W., Bußmann, A., Nitta, C., Hosticka, B.J., Wertheimer, R.
This communication describes a high-sensitivity, high dynamic range 768 x 576 pixel image sensor fabricated in 0.5µm standard CMOS technology and its design. The pixel pitch is 10µm x 10µm with a...
Design methodology for CMOS frequency-synthesizers for low-power low-cost FSK-transceivers (2004)
Christoffers, N., Kolnsberg, S., Kokozinski, R., Stücke, T., Hosticka, B.J.
CMOS wireless digital transceivers using frequency-shift-keying (FSK) can operate at low power consumption and chip area for several reasons: relaxed linearity requirement of the power amplifier due...
Three-dimensional CMOS image sensor with 4x64 pixel array (2004)
Elkhalili, O., Schrey, O.M., Jeremias, R., Mengel, P., Petermann, M., Brockherde, W., ...
A 3D CMOS imager based on time-of-flight (TOF) has been developed and successfully tested. It uses an active pulsed class 1 laser operating at 905nm to illuminate a 3D scene. The scene depth is...
Modelling of a 3D-CMOS sensor for time-of-flight measurement (2004)
Kuhla, R., Hosticka, B.J., Mengel, P., Listl, L.
A solid state 3D-CMOS camera system for direct time-of-flight image acquisition consisting of a CMOS imaging sensor, a laser diode module for active laser pulse illumination and all optics for image...
A CMOS detector with combined in-situ demodulation and image acquisition (2004)
Hehemann, I., Brockherde, W., Kemna, A., Hosticka, B.J.
All optoelectronic detectors today are based either on integrating or demodulating readout approaches. In this paper we introduce an optical detector that in-situ combines these two readout methods...
A CMOS photodiode array with in-pixel data acquisition system for computed tomography (2004)
Steadman, R., Morales-Serrano, F., Vogtmeier, G., Kemna, A., Özkan, E., Brockherde, W., ...
A CMOS photodetector array with in-pixel electronics has been developed for computed tomography (CT) applications. Current CT detectors are based on two discrete components: a photodiode array and a...
A 4 x 64 pixel CMOS image sensor for 3-D measurement applications (2004)
Elkhalili, O., Schrey, O.M., Mengel, P., Petermann, M., Brockherde, W., Hosticka, B.J.
A 4 x 64 pixel 3-D CMOS imager based on time-of-flight (TOF) has been developed and successfully tested. The measurement range is up to 8 m with resolution of 1 cm. The scene depth is determined by...
Hehemann, I., Brockherde, W., Hofmann, H., Kemna, A., Hosticka, B.J.
In this paper, a new fully integrated detector architecture for pick-up units in optical storage systems is presented. It features a special high-frequency photodiode constellation for data recovery...
Low noise, large area CMOS X-ray image sensor for C.T. application (2003)
Kemna, A., Brockherde, W., Hosticka, B.J., Özkan, E., Morales-Serrano, F., Steadman, R., ...
In this paper, we describe a novel CMOS X-ray active pixel sensor for indirect C.T. X-ray detection. Considerable noise reduction has been achieved by lowering the detector junction capacitance. For...
Low noise, large area CMOS X-ray image sensor for C.T. application (2003)
Kemna, A., Brockherde, W., Hosticka, B.J., Özkan, E., Morales-Serrano, F., Steadman, R., ...
A novel CMOS X-ray active pixel sensor for indirect C.T. X-ray detection has been developed. Noise reduction by reducing the detector junction capacitance is applied to increase the SNR, instead of...
Development and functional test of an epiretinal prosthesis (2003)
Krisch, I., Görtz, M., Mokwa, W., Hosticka, B.J.
This work presents the architecture, the realization, and the packaging of a micro implantable visual prosthesis system. Our epi-retinal implant system stimulates the ganglion cells of the outermost...
A CMOS photodiode array with in-pixel data acquisition system (2003)
Steadman, R., Kemna, A., Morales-Serrano, F., Vogtmeier, G., Özkan, E., Brockherde, W., ...
A CMOS photodetector array with in-pixel electronics has been developed for Computed Tomography (CT) applications. Consisting of 10x20 pixel array in-pixel electronics has been designed to achieve 17...
A 4x64 pixel CMOS image sensor for 3D measurement applications (2003)
Schrey, O., Elkhalili, O., Mengel, P., Petermann, M., Brockherde, W., Hosticka, B.J.
A 4x64 pixel array CMOS image sensor which can capture three-dimensional images has been integrated in a 0.5 mm n-well standard CMOS process. It is based on time-of-flight method and employs an...
Intraokulare Sehhilfe - Entwicklung der Komponenten und Aufbau des Gesamtsystems (2003)
Krisch, I., Schmid, A., Hosticka, B.J., Buß, R., Prämaßing, F., Püttjer, D., ...
Resolution prediction for bandpass-sigma-delta-modulators using SIMULINK behavior simulation (2003)
Weiler, D., Boom, T. Van Den, Hosticka, B.J.
This paper presents a detailed survey of the impact of circuit non-idealities of bandpass sigma-delta modulators (BP-SDM) affecting the signal-to-noise and distortion ratio (SNDR) and therefor the...
Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
Frequency-hopping-spread-sprectrum wireless digital communication-systems impose stringent requirements on both phase noise and settling time of PLL based frequency synthesizers employed in receivers...
"..ich seh in 3D!" Dreidimensional sehende CMOS Bildsensoren (2003)
Schrey, O., Jeremias, R., Elkhalili, O., Dinkelbach, R., Brockherde, W., Hosticka, B.J.
In den letzten Jahren ist eine stetig steigende Nachfrage nach Lösungskonzepten für intelligente Kameras und Sensoren, welche Anwendungen der industriellen und automotiven Bildverarbeitung...
A new single chip optical CMOS detector for next generation optical storage systems (2003)
Hehemann, I., Brockherde, W., Hofmann, H., Kemna, A., Hosticka, B.J.
In this paper a new fully integrated detector architecture for pick-up units in optical storage systems is presented. Apart from a special diode constellation for data recovery it features a 5x5...
Modular low-power, high-speed CMOS analog-to-digital converter of embedded systems (2003)
One of the main trends of microelectronics is toward design for integrated systems, i.e., system-on-a-chip (SoC) or system-on-silicon (SoS). Due to this development, design techniques for...
Weiler, D., Boom, T. Van Den, Hosticka, B.J.
This paper presents a novel technique for detection of defective sensor elements. For this purpose the sensor element is electrically stimulated using a pseudo random binary sequence (PRBS). The...
Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
PLL-basierte Frequenzgeneratoren erzeugen die in heutigen digitalen drahtlosen Kommunikationssystemen benötigten Trägersignale. Sogenannte Sigma-Delta Fractional-N Frequenzgeneratoren können mit...
CMOS imaging for automotive applications (2003)
Hosticka, B.J., Brockherde, W., Bussmann, A., Heimann, T., Jeremias, R., Kemna, A., ...
This contribution is devoted to CMOS imaging for automotive applications. It is shown that unlike CCD-based imaging, imaging based on CMOS-sensing meets adequately requirements posed by automotive...
Optical 3-D time-of-flight imaging system (2003)
Hosticka, B.J., Brockherde, W., Jeremias, R.
In this contribution we have presented optical imaging systems for nontactile acquisition of 3-D objects. We have briefly discussed main technologies and different approaches to 3-D imaging. As an...
Hehemann, I., Ozkan, E., Kemna, A., Brockherde, W., Hosticka, B.J., Hofmann, H.
This paper presents a special photodiode array layout to be used in optical pickup units in combination with optical storage systems. Apart from the features that a standard array offers, this design...
A new detector architecture for optical pickup units in DVD systems (2002)
Hehemann, I., Brockherde, W., Bußmann, A., Hofmann, H., Kemna, A., Kokozinski, R., ...
This paper describes a new detector architecture for optical pickup units in DVD systems. Apart from data recovery it allows the detection of the spatial light intensity distribution to facilitate a...
Weiler, D., Christoffers, N., Boom, T. Van Den, Hosticka, B.J.
In diesem Beitrag wird eine neuartige Fehlererkennungsmethode basierend auf Sigma-Delta-Modulation und Matched-Filterung vorgestellt, die speziell für integrierte Sensorelemente geeignet ist. Dazu...
ADSL analog front-end design for testability (2002)
Bresch, M., Hosticka, B.J., Klein, B., Kokozinski, R., Teßmann, D., Tagami, K., ...
Das in diesem Beitrag vorgestellte ADSL Analog Front-End (AFE) ist ein besonderes Design für gute Testbarkeit. Der Chip läßt sich durch externe Signale für den Test beliebiger Komponenten...
Wireless power and data transmission system for a micro implantable intraocular vision aid (2002)
Hijazi, N., Krisch, I., Hosticka, B.J.
Wireless power and data transmission system developed for an intraocular vision aid for blind patients will be described. This system is applicable for patients suffering from bilateral corneal...
Image aquisition and image processing for the intraocular vision aid (2002)
Krisch, I., Hijazi, N., Hosticka, B.J.
The contribution describes an "intraocular vision aid (IOVA)" system for patients suffering from corneal opacification. In order to gain patients' acceptance the system has to be miniaturized to a...
Accurate CMOS current-mode-filters for high frequencies and low power consumption (2002)
Christoffers, N., Hosticka, B.J., Kokozinski, R.
Analog signal processing in many applications requires low-noise, low-power filters that are little sensitive to element value variations. To meet such requirements the leapfrog approach can be...
Schrey, O., Huppertz, J., Filimonovic, G., Bußmann, A., Brockherde, W., Hosticka, B.J.
An integrated 1024x1024 CMOS image sensor with programmable region of interest (ROI) readout and multi-exposure technique has been developed and successfully tested. Size and position of the ROI is...
Current-mode filters for high frequencies realized in CMOS technologies (2002)
Christoffers, N., Hosticka, B.J., Kokozinski, R.
Analog signal processing in many applications requires low-noise, loe-power filters that are little sensitive to element value variations. To meet such requirements the leapfrog approach can be...
A survey of oscillator phase-noise: Analysis and simulation (2002)
Zhang, Z., Christoffers, N., Hosticka, B.J., Kaiser, T., Kokozinski, R., Lin, J.
Oscillator phase noise is of major concern in the design of transceivers used in modern wirelss digital communication devices. It dcreases the selectivity of the recievers and increases the bandwidth...
Behavioral Modeling for High-Level Synthesis of Analog and Mixed-Signal Systems from VHDL-AMS (2002)
Alex Doboli, Ranga Vemuri, B. J. Hosticka, W. Brockherde, R. Klinke, R. Kokozinski, ...
High-level synthesis is highly demanded for managing the complexity of analog and mixed-signal system designs. However, synthesis methods are currently in their infancy. The absence of a high-level...
Weiler, D., Hammerschmidt, D., Hosticka, B.J.
This paper presents a novel technique for detection of defective sensor elements. For this purpose the sensor elementis electrically stimulated using a pseudo random binary sequence (PRBS). The...
Smart cameras for intelligent buildings (2001)
In this contribution we will review the development of smart cameras with particular emphasis on applications in so called "intelligent" buildings. First we will outline the state of the art in this...
High dynamic range CMOS image sensors featuring multiple integration and auto-calibration (2001)
Schwarz, M., Bußmann, A., Heimann, K., Hosticka, B.J., Huppertz, J., Schrey, O.
Industrial and automotive image acquisition systems require dedicated CMOS image sensors with increased optical dynamic range, high image quality, and a high local contrast. Whereas image sensors...
Color filter array and color correction for high dynamic range CMOS image sensors (2001)
Heimann, T.K., Schwarz, M., Hosticka, B.J.
This contribution presents a novel approach to CMOS color image sensors featuring high dynamic range. First we introduce a novel Color-Filter-Array (CFA) that has been especially developed for CMOS...
Interrogator for stacked passive inductive transponders (2001)
Christoffers, N., Hammerschmidt, D., Bögel, G. Vom, Hosticka, B.J., Niederholz, J.
In logistics and other applications there is a huge demand for passive inductive transponder systems that are for "tagging" various objects. The capability to read multiple transponders quasi...
Schrey, O., Huppertz, J., Filimonovic, G., Bußmann, A., Brockherde, W., Hosticka, B.J.
An integrated 1024x1024 CMOS image sensor with programmable region of interest (ROI) readout and multi-exposure technique has been developed and successfully tested. Size and position of the ROI is...
Invariant texture segmentation with reduced illumination sensitivity (2001)
Bresch, M., Hosticka, B.J., Schrey, O.
A method for rotation and scale invariant texture segmentation is proposed, which can be also employed for object recognition based on pattern analysis in noisy images. The segmentation scheme is...
A programmable intraocular CMOS pressure sensor system implant (2001)
Stangel, K., Kolnsberg, S., Hammerschmidt, D., Hosticka, B.J., Mokwa, W.
In this paper we present a programmable intraocular pressure sensor system implant integrated on a single CMOS chip. It contains on-chip micromechanical pressure sensor array, a temperature sensor,...
In diesem Beitrag wird der Fortschritt auf dem Gebiet der modernen CMOS-Bildsensorik dargestellt und an einigen Beispielen demonstriert.
A highly flexible evaluation system for telecommunication analog front-ends (2001)
Bresch, M., Hammerschmidt, D., Hosticka, B.J., Kemmerling, M., Klein, B., Kokozinski, R., ...
As technological progress leads to increasing data transmission rates, use of digital transmission is inevitable. However, since analog waveforms are involved in digital transmission, analog...
A CMOS photosensor array for 3D imaging using pulsed laser (2001)
Jeremias, R., Brockherde, W., Dömens, G., Hosticka, B.J., Listl, L., Mengel, P.
A 32x2 pixel optical TOF range sensor in standard 0.5 µm CMOS capable of acquiring up to 20k 3D-images/s is presented. Combination of CDS, S&H, multiple double short time integration, a high-speed...
Eine Smart-Airbag Lösung mit einer Hochgeschwindigkeitskamera und CMOS-Bildsensor (2001)
Santos Conde, J.E., Hosticka, B.J.
Es wird ein optisches Verfahren zur Sitzüberwachung in Kraftfahrzeugen für die intelligente Airbagsteuerung unter Verwendung eines CMOS-Hochgeschwindigkeitsbildsensors vorgeschlagen. Ziel dieser...
CMOS image sensing for surveillance applications and object tracking (2000)
Santos Conde, J.E., Teuner, A.S., Hillebrand, M., Stevanovic, N., Hosticka, B.J.
A survey of sensor concepts and realizations that are tailored for surveillance applications is presented. We describe the basic operating principles of CMOS imagers and summarize their most...
Low Power DA- und AD-Umsetzer für DSL-Anwendungen (2000)
Teßmann, D., Bresch, M., Hammerschmidt, D., Hesener, M., Hosticka, B.J., Kemna, A., ...
In diesem Beitrag wird die Realisierung von hochauflösenden und schnellen Digital-Analog- (DAC) und Analog-Digital Umsetzern (ADC) für DSL-Anwendungen beschrieben. Die beiden Umsetzer wurden aus...
Die Fortschritte der CMOS-Technologie haben die Integration von mikroelektronischen Systemen mit Millionen von Transistoren auf einem Chip ermöglicht. Die jetzigen Strukturverkleinerungen, die tief...
Ein 2,5V 0,25µm CMOS ADSL Analog-Front-End IC (2000)
Kokozinski, R., Bresch, M., Hammerschmidt, D., Hesener, M., Hosticka, B.J., Kemna, A., ...
Dieser Beitrag beschreibt die Realisierung eines ADSL Analog-Front-Ends. Der Baustein, der in einer 0,25µm CMOS Technologie gefertigt wurde, integriert sämtliche analogen Funktionalitäten für...
A programmable intraocular CMOS pressure sensor system implant (2000)
Stangel, K., Kolnsberg, S., Hammerschmidt, D., Hosticka, B.J., Mokwa, W.
In this contribution we present a programmable intraocular pressure sensor system implant integrated on a single CMOS chip. It contains on-chip micromechanical pressure sensor array, a temperature...
Micro implantable visual prostheses (2000)
Schwarz, M., Ewe, L., Hijazi, N., Hosticka, B.J., Huppertz, J., Kolnsberg, S., ...
Two micro implantable visual prosthesis systems for blind patients will be described. The first system is a retina implant which is based on an implantable microelectrostimulator applicable for...
A low-voltage low-power 0.25 µm CMOS ADSL analog front-end IC (2000)
Kokozinski, R., Bresch, M., Hammerschmidt, D., Hesener, M., Hosticka, B.J., Kemna, A., ...
A 0.12 µm 2.5V CMOS analog front-end IC for an ADSL system is presented. The IC contains all analog functions including gain-controlled transmit and receive amplifiers, highly linear continuous-time...
High speed camera system using a CMOS image sensor (2000)
Hillebrand, M., Stevanovic, N., Hosticka, B.J., Santos Conde, J.E., Teuner, A.S., Schwarz, M.
In this paper a new camera system for high speed imaging is presented which is capable of recording images with a resolution of 256x256 pixels and frame rates in excess of 1000 frames per second. It...
A CMOS image sensor for high-speed imaging (2000)
Stevanovic, N., Hillebrand, M., Hosticka, B.J., Teuner, A.S.
Acquisition of the images of fast-moving objects requires imagers with high photoresponsitivity at short integration times, synchronous exposure, and high-speed parallal readout. Previous CMOS...
CMOS circuits for a micro implantable intraocular vision aid (2000)
Schwarz, M., Hijazi, N., Hosticka, B.J.
CMOS integrated microelectronic circuits developed for an intraocular vision aid for blind patients will be described. The system is a visual prosthesis based on an implantable intraocular...
CMOS microtransceivers in ophthalmology (2000)
Kolnsberg, S., Stangel, K., Hammerschmidt, D., Schwarz, M., Hosticka, B.J., Ewe, L., ...
Transceivers serve to receive and transmit various transponder data, such as identification or sensory information, using mainly RF links. An interesting category are transponders that extract their...
Selective low bit-rate image compression using wavelet transform (2000)
Santos Conde, J.E., Niederholz, J., Hosticka, B.J.
A novel image compression approach reaching very low bit-rates by utilization of region of interest information in the transform domain of the discrete wavelet transform (DWT) is introduced. The...
Santos Conde, J.E., Stevanovic, N., Hillebrand, M., Hosticka, B.J.
In this communication we address the problem of detection and tracking of moving objects for surveillance and occupant detection systems. The primary goal in this framework is the motion estimation...
A high-dynamic-range CMOS image sensor for automotive applications (2000)
Schanz, M., Nitta, C., Bußmann, A., Hosticka, B.J., Wertheimer, R.
In this contribution, a 256 x 256 pixel CMOS imager is described that exhibits 120-dB dynamic range, 56-dB signal-to-noise ratio (SNR), 65% fill factor, and an effective frame rate of 50 Hz. This has...
Single chip CMOS imagers and flexible microelectronic stimulators for a retina implant system (2000)
Schwarz, M., Ewe, L., Hauschild, R., Hosticka, B.J., Huppertz, J., Kolnsberg, S., ...
We are presenting CMOS image sensors and a microelectronic stimulator for realization of a retina implant system that will provide visual sensations using electrostimulation to patients suffering...
Remote CMOS pressure sensor chip with wireless power and data transmission (2000)
Boom, T. Van Den, Teßmann, D., Lerch, R.G., VomBögel, G., Hammerschmidt, D., Amelung, J., ...
We present a single chip wireless pressure sensor system containing on-chip capacitive pressure arrays, temperature sensor, voltage reference, SC 10bit cyclic ADC, controller, EEPROM and ASK...
A single-chip smart pressure sensor family with 2 dimensional calibration (2000)
Weiler, D., Machul, O., Hammerschmidt, D., Amelung, J., Hosticka, B.J.
We present a single-chip CMOS solution for a pressure transducer reaching an 1% accuracy over the temperature range between -40°C and 125°C after calibration that delivers a ratiometric analog...
Nonlinear function generation using oversampled Sigma-Delta-modulators (2000)
Machul, O., Hammerschmidt, D., Weiler, D., Hosticka, B.J.
In this paper we present a technique for nonlinear function generation which uses a novel sparse look-up table approach. This novel approach can be derived from the simple look-up table concept and...
Low-cost high speed CMOS camera for automotive applications (2000)
Stevanovic, N., Hillebrand, M., Hosticka, B.J., Santos Conde, J.E., Teuner, A.S.
The increased demand for more intelligence in automotive applications requires robust low-cost sensory systems. This paper presents low-cost high-speed camera employing novel CMOS sensors capable of...
Detection of defective sensor elements using sigma-delta-modulation and a matched filter (2000)
Weiler, D., Machul, O., Hammerschmidt, D., Hosticka, B.J.
We present an integrable solution for detection of defective sensor elements using sigma-delta-modulation and a matched filter. The sensor element is stimulated using a pseudo random binary sequence...
1% genaue Absolutdrucksensorfamilie mit zweidimensionaler Kalibration (2000)
Weiler, D., Machul, O., Hammerschmidt, D., Amelung, J., Hosticka, B.J., Mokwa, W.
In diesem Beitrag wird eine monolithisch integrierte Absolutdrucksensorfamilie mit "on-chip" oberflächenmikromechanischem kapazitivem Drucksensorelement, Sensorauslese, Linearisierung und...
Wavelet-basiertes Verfahren zur selektiven Kompression medizinischer Bilddaten (2000)
Santos Conde, J.E., Niederholz, J., Hosticka, B.J.
Im vorliegenden Beitrag wird ein auf der diskreten Wavelet-Transformation basierendes Verfahren zur selektiven Kompression medizinischer Bilddaten vorgestellt. Die Signifikanz einzelner Bildbereiche...
Möglichkeiten der CMOS-Bildsensorik im Automobilbereich (1999)
Bußmann, A., Hosticka, B.J., Schanz, M.
In diesem Beitrag wird ein Überblick über Anwendungen von CMOS-Photosensoren gegeben. Schwerpunktthema ist der Einsatz dieser Sensoren in der Automobilindustrie. Anhand von Beispielen für die...
Surveillance system based on detection and tracking of moving objects using CMOS imagers (1999)
Santos Conde, J.E., Teuner, A.S., Hosticka, B.J.
The present contribution presents a novel stand-alone surveillance system based on detection and tracking of moving objects using CMOS imagers. The system fuses the acquisition and processing task,...
Surveillance sensor systems using CMOS imagers (1999)
Teuner, A.S., Hillebrand, M., Hosticka, B.J., Santos Conde, J.E., Stevanovic, N.
Surveillance sensors are being applied in factory automation systems, traffic control, entrapment protection, automotive safety systems and in other applications where information about the occupancy...
A smart airbag solution based on a high speed CMOS camera system (1999)
Santos Conde, J.E., Hillebrand, M., Teuner, A. S., Stevanovic, N., Iurgel, U., Hosticka, B.J.
In this communication we present a low cost smart airbag solution based on a high speed active CMOS camera system. The system continuously monitors the seats and quickly determines the occupancy...
Single chip CMOS imagers and flexible microelectronic stimulators for a retina implant system (1999)
Schwarz, M., Hauschild, R., Hosticka, B.J., Huppertz, J., Kneip, T., Kolnsberg, S., ...
In this contribution we present the architecture and realization of microelectronic image sensors and flexible active microstimulators for a retina implant system that will provide visual sensations...
Single chip CMOS image sensors for a retina implant system (1999)
Schwarz, M., Hauschild, R., Hosticka, B.J., Huppertz, J., Kneip, T., Kolnsberg, S., ...
This work describes the architecture and realization of microelectronic components for a retina implant system that will provide visual sensations to patients suffering from photoreceptor...
Rauschfilterung von echokardiographischen Bildsequenzen mit adaptiven Rangordnungsfiltern (1999)
Santos Conde, J.E., Teuner, A.S., Pichler, O., Hosticka, B.J.
Im vorliegenden Beitrag wird ein Verfahren zur Rauschfilterung von echokardiographischen Bildsequenzen mit adaptiven Orts-Zeit-Rangordnungsfiltern beschrieben, bei denen die Maske des...
On-chip focal plane filtering for CMOS imagers (1999)
Huppertz, J., Kneip, T., Schwarz, M., Hosticka, B.J.
The use of the CMOS technology for imaging enables the cointegration of additional signal processing circuitry on the same chip as the imager. We propose an architecture for a CMOS imager with linear...
Microelectronic components for a retina implant system (1999)
Kolnsberg, S., Kneip, T., Lü, X., Huppertz, J., Hauschild, R., Schwarz, M., ...
This work describes the architecture and realisation of microelectronic components for a retina implant system that will provide visual sensations to patients suffering from photoreceptor...
A locally adaptive CMOS image sensor with 90dB dynamic range (1999)
Schrey, O., Hauschild, R., Hosticka, B.J., Iurgel, U., Schwarz, M.
An integrated 128x128 CMOS image sensor with programmable diffusion kernel for local brightness adaptation and contrast enhancement has been developed and successfully tested. Local brightness...
Invariant texture segmentation with reduced illumination sensitivity (1999)
Bresch, M., Hosticka, B.J., Schrey, O.
A method for rotation and scale invariant texture segmentation is proposed, which can be also employed for object recognition based on pattern analysis in noisy images. The segmentation scheme is...
A high speed camera system based on a image sensor in standard CMOS technology (1999)
Stevanovic, N., Hillebrand, M., Hosticka, B.J., Iurgel, U., Teuner, A.S.
In this contribution a novel camera system developed for high speed imaging will be presented. The core of the system consists of a CMOS image sensor manufactured in a 1 mu m standard CMOS process....
A high dynamic range CMOS image sensor for automotive applications (1999)
Schanz, M., Nitta, C., Eckart, T., Hosticka, B.J., Wertheimer, R.
In this contribution we present a high dynamic range CMOS image sensor for automotive applications. It exhibits a 256 x 256 pixel resolution and a dynamic range of almost 120dB despite linear readout...
Hierarchical locally adaptive multigrid motion estimation for surveillance applications (1999)
Santos Conde, J.E., Teuner, A.S., Hosticka, B.J.
In this communication we address the problem of detection and tracking of moving objects for surveillance or occupant detection systems. The primary goal in this framework is the motion estimation of...
Boom, T. Van Den, Stevanovic, N., Driesen, J., Hammerschmidt, D., Hosticka, B.J.
The design techniques for analog-to-digital converters (ADCs) require careful optimization in order to minimize the amount of hardware required and enable economical monolithic integration. A basic...
Boom, T. Van Den, Stevanovic, N., Driesen, J., Hammerschmidt, D., Hosticka, B.J.
The design techniques for analog-to-digital converters (ADCs) require careful optimization in order to minimize the amount of hardware required and enable economical monolithic integration. A basic...
An absolute air pressure smart sensor family with 2 dimensional calibration (1999)
Weiler, D., Machul, O., Amelung, J., Hammerschmidt, D., Hosticka, B.J.
We present a monolithic pressure transducer family with on-chip pressure sensor, readout, linearization, and temperature compensation, reaching an 1% accuracy after calibration. Temperature...
256x256 pixel CMOS imager with linear readout and 120dB dynamic range (1999)
Schanz, M., Nitta, C., Eckart, T., Hosticka, B.J., Wertheimer, R.
In this contribution, a 256x256 pixel CMOS imager is described, which features linear readout, 120dB dynamic range (DR), 56dB signal-to-noise ratio, 65% filling factor, and an effective frame rate of...
A wide dynamic range CMOS imager (1998)
Huppertz, J., Hauschild, R., Hosticka, B.J., Kneip, T., Schwarz, M.
We have designed and integrated a 400 x 300 pixel imager in a standard 1 mu m double metal, single poly CMOS process. It features high dynamic range and random pixel access. The pixel size is 25.2 mu...
Pichler, O., Teuner, A.S., Hosticka, B.J.
This paper presents an unsupervised texture segmentation algorithm based on feature extraction using multichannel Gabor filtering. It is shown that feature contrast, a criterion derived for Gabor...
Smart 2048-pixel linear CMOS image sensor (1998)
Brockherde, W., Hosticka, B.J., Petermann, M., Schanz, M., Spors, R.
A standard-CMOS 2048-pixel linear image sensor with electronic shutter function and random pixel access is presented. As sensing element a floating n-well PMOS transistors with high photosensitivity...
Sigma-Delta-Modulator 3. Ordnung mit gechoppten Differenzpfad-SC-Integratoren (1998)
Hammerschmidt, D., Kokozinski, R., Wieland, F., Andersch, M., Dathe, L., ...
Für eine hochgenaue Streckenmessung wurde ein Sigma-Delta-Modulator 3. Ordnung realisiert, der bei einer Basisbandfrequenz von 10kHz und einer Überabtastrate (OSR) von 125 ein...
A motion detection system based on a CMOS photo sensor array (1998)
The aim of motion detection in image sequences using image analysis approaches has been established for a long time. Moreover, in applications like surveillance or occupancy detection segmentation of...
An interior compartment protection system based on motion detection using CMOS imagers (1998)
Teuner, A.S., Hosticka, B.J., Triftshäuser, G.
The aim of motion detection in image sequences for scene analysis is long established. Also, it can be used in applications like surveillance or occupant detection for segmentation of moving objects...
Baur, M., Schumm, T., Wertheimer, R., Schanz, M., Eckart, T., Nitta, C., ...
Im vorliegenden Beitrag wird ein hochsprachenprogrammierbares System zur schritthaltenden Vollbild-Interpretation natürlich beleuchteter Szenenfolgen im Videotakt vorgestellt. Im einzelnen werden...
A high frame rate image sensor in standard CMOS-technology (1998)
Stevanovic, N., Hillebrand, M., Hosticka, B.J., Iurgel, U., Teuner, A.S.
An integrated CMOS image sensor suitable for monitoring fast motion e.g. in very fast industrial processes, crash tests, and high speed machine vision has been developed and tested. The test chip...
Flexible silicon structures for a retina implant (1998)
Ewe, L., Mokwa, W., Schwarz, M., Hosticka, B.J.
Worldwide there are some different approaches toward the development of a retina implant as a visual prosthesis for people suffering from retinitis pigmentosa (RP). In this work we present an...
Effiziente Kalibration für resistive Sensorsysteme (1998)
Kemna, A., Machul, O., Hammerschmidt, D., Hosticka, B.J.
Heutzutage entfällt - abhängig von den Genauigkeitsanforderungen - ein erheblicher Teil der Herstellungskosten präziser Sensorsysteme auf die Kalibrationskosten. Die Entwicklung einer effizienten...
Schwarz, M., Ewe, L., Hauschild, R., Hosticka, B.J., Huppertz, J., Kneip, T., ...
This contribution describes the realization of microelectronic components for a retina implant system that will provide visual sensations to patients with photoreceptor degeneration by applying...
Computergestützte Endokarderkennung echokardiographischer Bildsequenzen (1998)
Teuner, A.S., Santos Conde, J.E., Pichler, O., Hosticka, B.J.
In der Ultraschalldiagnostik müssen für den Nachweis koronarer Herzerkrankungen mit Hilfe der Streß-Echokardiographie die Bewegungen des Endokards während der Systole und Diastole vollständig...
Compact representation of redundant signals using the wavelet packet transform (1998)
Niederholz, J., Schwarz, M., Hosticka, B.J.
We represent a novel approach to efficient representation of redundant signals that is based on statistical interdependence of wavelet packet (WP) coefficients of such signals. The WP coefficients...
Sensor systems based on CMOS technology benefit not only from capability of silicon to realize both, sensing and electronic functions, but also from the manufacturing maturity that the CMOS...
Sensor systems based on CMOS technology benefit not only from the capability of silicon to realize both sensing and electronic functions, but also from the manufacturing maturity that CMOS technology...
A CMOS image sensor with local brightness adaptation and high intrascene dynamic range (1998)
Hauschild, R., Hillebrand, M., Hosticka, B.J., Huppertz, J., Kneip, T., Schwarz, M.
An integrated CMOS image sensor with 128x128 pixels and local brightness adaptation suitable for machine vision and surveillance applications has been developed and successfully tested. Local...
Santos Conde, J.E., Teuner, A.S., Pichler, O., Hosticka, B.J.
Im vorliegenden Beitrag wird ein automatisiertes Verfahren zur Endokarderkennung in digitalen echokardiographischen Bildsequenzen vorgestellt. Das vorgeschlagene Verfahren gliedert sich modular in...
A 128-pixel CMOS image sensor with integrated analog nonvolatile memory (1998)
Brockherde, W., Schanz, M., Hosticka, B.J., Aslam-Siddiqi, A.
A 128-pixel complementary metal-oxide-semiconductor (CMOS) image sensor array with analog nonvolatile storage for each pixel has been realized in a 1.5-mu m single-poly standard CMOS/EEPROM...
A 16 x 16 nonvolatile programmable analog vector-matrix multiplier (1998)
Brockherde, W., Hosticka, B.J., Aslam-Siddiqi, A.
In this paper, we present a 16 x 16 analog vectormatrix multiplier with analog electrically erasable and programmable read-only memories (EEPROM's) used as nonvolatile storage for the weight matrix...
1 Bit Sigma-Delta Modulator mit nichtlinearer Quantisierung für My-law Kodierung (1998)
Weiler, D., Nielsen, P.A., Hammerschmidt, D., Machul, O., Hosticka, B.J.
Es wird ein Sigma-Delta-Modulator erster Ordnung mit "My-law" Kodierung für die dynamische Kompression von Sprachsignalen vorgestellt. Die "My-law"-Kennlinie wird durch Rückkopplung 15 exponentiell...
An interior compartment protecting system based on motion detection using CMOS imagers (1998)
A. Teuner, B. J. Hosticka, G. Triftshäuser
The aim of motion detection in image sequences for scene analysis is long established. Also, it can be used in applications like surveillance or occupant detection for segmentation of moving objects...
Machul, O., Hammerschmidt, D., Brockherde, W., Hosticka, B.J., Obermeier, E., Krause, P.
A smart pressure transducer with a piezo resistive sensor microbridge, digitally controlled readout electronics, and a nonlinear temperature compensation based on spline functions, is integrated on a...
Smart CMOS image sensor arrays (1997)
Schanz, M., Brockherde, W., Hauschild, R., Hosticka, B.J., Schwarz, M.
In this contribution, we present several smart image sensor arrays intended for various applications. We discuss the realization of image sensors in CMOS technology and show some examples of...
Single bit sigma-delta modulator with nonlinear quantization for mu m-law coding (1997)
Weiler, D., Nielsen, P.A., Hammerschmidt, D., Machul, O., Hosticka, B.J.
This paper presents a 1st order sigma-delta-modulator with µ-law coding for dynamic compression of audio signals. The nonlinearity is located in the feedback loop of the modulator and does not...
Hosticka, B.J., Brockherde, W., Hammerschmidt, D.
Silicon sensor systems are based on capability of silicon to serve as a basic material for monolithic cointegration of sensors and electronics. Implementation of this cointegration, its advantages...
Rotations- und skaleninvariante Textursegmentierung mit Mehrkanalfilterung (1997)
Pichler, O., Santos Conde, J.E., Teuner, A.S., Hosticka, B.J.
Es wird ein neuartiger Algorithmus zur rotations- und skaleninvarianten Texturerkennung vorgestellt. Das Verfahren basiert auf der Merkmalextraktion durch eine polar-logarithmisch angeordnete...
Orientation- and scale-invariant recognition of textures in multi-object scenes (1997)
Teuner, A.S., Pichler, O., Santos Conde, J.E., Hosticka, B.J.
This contribution describes a novel approach to orientation and scale-invariant detection of textured objects in images. It performs both, a segmentation of multi-object scenes and the identification...
Orientation- and scale-invariant recognition of textures in multi-object scenes (1997)
Teuner, A.S., Pichler, O., Santos Conde, J.E., Hosticka, B.J.
This contribution describes a novel approach to orientation and scale-invariant detection of textured objects in images. It performs both, a segmentation of multi-object scenes and the identification...
Lineare Programmierung von analogen EEPROMs (1997)
Aslam, A., Brockherde, W., Hosticka, B.J.
Die Nutzung von EEPROM-Speicherzellen für analoge Anwendungen wird vorgestellt. Dabei werden die in einem Standard CMOS Prozeß mit EEPROM-Option verfügbaren und für digitale Anwendungen...
Machul, O., Hammerschmidt, D., Brockherde, W., Hosticka, B.J.
Der Gesamtpreis präziser Sensorsysteme wird heutzutage neben den sinkenden Herstellungskosten massiv von den Kosten für das Testen und der zumeist zeitintensiven Kalibration mitbestimmt. Die Test-...
Integrated sensor systems in CMOS technology (1997)
In this contribution we discuss the fundamental issues of designing and building integrated sensor systems in CMOS technology.
Integrated sensor systems in CMOS technology (1997)
In this contribution we discuss the fundamental issues of designing and building integrated sensor systems in CMOS technology
Niederholz, J., VomBögel, G., Schwarz, M., Hosticka, B.J.
Der hier vorgestellte flexible Kompressionsalgorithmus berücksichtigt die bedingt durch das Übertragungsverfahren zur Verfügung stehende Bandbreite, die vom Arzt geforderte Signalqualität und den...
Fast CMOS imaging with high dynamic range (1997)
Huppertz, J., Hauschild, R., Hosticka, B.J., Kneip, T., Müller, S., Schwarz, M.
In this communication we report on our experience in 2-D imaging based on standard CMOS technology that features high speed, high dynamic range, and random pixel access. We have designed and...
Dynamic compression for sampled-data signals in analog integrated CMOS circuits (1997)
Uhlemann, V., Hosticka, B.J., Klinke, R.
A novel integrated CMOS circuit for signal compression of analog sampled-data signals is presented. It provides charge readout and amplification featuring very high dynamic range, which is useful in...
CMOS photosensor arrays with on-chip signal processing (1997)
Schanz, M., Brockherde, W., Hauschild, R., Hosticka, B.J., Teuner, A.S.
This communication presents several linear photosensor arrays implemented in a standard CMOS technology that are based on active pixel sensing principle and utilize on-chip signal processing.
Ein analoges 40 MHz Bandpaßfilter für niedrige Versorgungsspannungen (1997)
Kokozinski, R., Maschmann, M., Brockherde, W., Hosticka, B.J., Schardein, W.
Der Beitrag beschreibt ein integriertes analoges Bandpaßfilter, realisiert in einer 1 Mikrometer BiCMOS-Technologie. Die Implementierung der Schaltung basiert auf einer Differenzpfad-Gyrator-Technik...
Unsupervised motion segmentation of image sequences using adaptive filtering (1996)
Pichler, O., Hosticka, B.J., Teuner, A.S.
In this paper we present a new method for feature extraction in unsupervised motion segmentation of image sequences. This method is based on the multichannel filtering of the input image sequence...
Readout electronics with calibration and on-line test for resistive sensor bridges (1996)
Machul, O., Hammerschmidt, D., Brockherde, W., Hosticka, B.J.
In this paper a digitally programmable readout electronics for resistive sensor bridges is presented together with an efficient method for calibration based on the principle of piecewise linear...
A novel analog module generator environment (1996)
Wolf, M., Kleine, U., Hosticka, B.J.
This paper describes a novel analog module generator environment for the automatic layout development of analog circuits. The C++ tool features a novel procedural layout description language that...
Kombinierte RAM/PROM Speicherzellen in kalibrierbaren Sensorschaltungen (1996)
Boom, T. Van Den, Hammerschmidt, D., Machul, O., Brockherde, W., Hosticka, B.J.
Für den Einsatz in Sensorsystemen werden Speicherzellen vorgestellt, die zunächst während der Ermittlung der benötigten Einstellungen als RAM betrieben werden und nach Abschluß der Kalibration...
Inverse kinematics computation with modified CORDIC (1996)
This paper presents hardware solutions for the computation of inverse kinematics. They are based on an existing pipeline arithmetic processor which employs the CORDIC algorithm. It is shown that a...
An integrated environment for fast kinematic processing (1996)
In this paper we present an integrated approach for very fast kinematic computations in multibody systems with complex structure. The approach relies on using optimized algorithms for generation of...
Schwarz, M., Hosticka, B.J., Hauschild, R., Mokwa, W., Scholles, M.
This work describes the architecture and planned realization of components for a retina implant which includes a sensory device for image acquisition, biologically inspired neural nets for modeling...
Computation of the ejection ratio of the ventricle from echocardiographic image sequences (1996)
Teuner, A.S., Pichler, O., Hosticka, B.J.
Our contribution deals with the automatic computation of the ventricle volume ratio of the human heart at the end-systolic and the end-diastolic phases based on echocardiographic image sequences. The...
Pichler, O., Teuner, A.S., Hosticka, B.J.
In recent studies on image analysis an increasing effort has been carried out in the area of wavelet transform techniques for the discrimination and classification of textural images. These methods...
A CMOS optical sensor system performing image sampling on hexagonal grid (1996)
Hauschild, R., Schwarz, M., Hosticka, B.J., Müller, S.
An integrated CMOS image acquisition system suitable or retinal information processing in bionic vision systems or product inspection has been developed and tested. It supports the readout of...
A CMOS image sensor with combined analog nonvolatile storage capability (1996)
Aslam, A., Brockherde, W., Hosticka, B.J., Vogt, H., Zimmer, G.
A light-sensitive pmos-transistor in a floating n-well and combined with an analoge EEPROM has been fabricated as a single element in a standard 1.5 mu m single-poly CMOS/EEPROM technology. It...
Analog Low-Voltage-CMOS-Schaltungen (1996)
Kokozinski, R., Brockherde, W., Hammerschmidt, D., Hosticka, B.J.
Ein 1,5-GHZ-Breitbandverstärker mit Impedanzanpassung in Standard 1,1 µm CMOS-Technologie (1996)
Kokozinski, R., Brockherde, W., Hosticka, B.J.
Dieser Beitrag beschreibt neue Schaltungstechniken zur Realisierung von Breitbandverstärkern mit Impedanzanpassung für Standard CMOS Technologien. Die vorgestellte Schaltungskonfiguration verwendet...
Unsupervised texture segmentation of images using tuned matched Gabor filters (1995)
Teuner, A.S., Pichler, O., Hosticka, B.J.
In this correspondence, we propose a novel method for efficient image analysis that uses tuned matched Gabor filters. The algorithmic determination of the parameters of the Gabor filters is based on...
Trimless high precision ratioed resistors in D/A and A/D converters (1995)
Wittmann, R., Schardein, W., Hosticka, B.J., Burbach, G., Arndt, J.
Investigations into realization of high precision ratioed resistors in standard CMOS and BiCMOS processes have been carried out. The results indicate that the layout of the resistors can be optimized...
Toward integrated system design. A global perspective (1995)
This contribution discusses problems of integrated system design. It will be shown what is the current state of the art and where are the deficits. Finally, recommendations for future development of...
Silicon microsystems for mechatronic applications (1995)
Brockherde, W., Hammerschmidt, D., Hosticka, B.J.
While modern microelectronic fabrication processes allow monolithic integration of millions and millions of electronic devices on tiny silicon chips and thus form a technological base for...
Scholles, M., Hosticka, B.J., Schwarz, M.
In this contribution we present a new biology-inspired neuron model and its real-time realization using a dedicated neural hardware emulator. The biological neuron model overcomes the limitations of...
A multichannel algorithm for image segmentation with iterative feedback (1995)
Pichler, O., Hosticka, B.J., Teuner, A.S.
In this paper we present a segmentation algorithm for multichannel image analysis. It is based on a novel method that significantly improves the segmentation performance with respect to both...
Microwave wideband amplifiers in bulk-CMOS and CMOS/SIMOX technologies (1995)
Barthel, W., Brockherde, W., Budde, W., Hosticka, B.J., Kokozinski, R., Zimmer, G.
This contribution investigates the feasibility of realization of analog microwave circuits in submicron CMOS technologies, particulary in bulk-CMOS and CMOS/SIMOX. The investigation concentrates on...
Low-voltage CMOS analog circuits (1995)
Hosticka, B.J., Brockherde, W., Hammerschmidt, D., Kokozinski, R.
This contribution addresses the issue of low-voltage analog circuit design in CMOS technology. In particular, three areas of design will be discussed: switched-capacitor circuits, continuous-time...
A low-voltage BiCMOS power stage (1995)
Maschmann, M., Hosticka, B.J., Schardein, W., Kleine, U., Georgakos, G.
A novel low-voltage class AB output stage integrated in BiCMOS technology is presented. It features a novel class AB low impedance output stage and has a simple but efficient quiescient current...
Ein Kommunikations-Chip für die parallele Signalverarbeitung (1995)
Kesper, M., Scholles, M., Schwarz, M., Hosticka, B.J.
Hohe Kommunikationsbandbreiten in parallelen Systemen lassen sich nur durch den Einsatz integrierter Kommunikationsbausteine erzielen. In diesem Beitrag stellen wir ein anwendungsspezifisches...
Hierarchisches Verfahren zur Synthese analoger Schaltungen (1995)
Wittmann, R., Schardein, W., Hosticka, B.J., Vahrmann, R., Kern, S.
Dieser Beitrag stellt eine an die Vorgehensweise eines Schaltungsdesigners angelehnte neue Strategie zur Synthese analoger Schaltungen vor. Eine analoge Schaltung wird beginnend mit den gewünschten...
Schwarz, M., Hosticka, B.J., Scholles, M., Eckmiller, R.
This work describes the concept of an implant of an electrostimulation of retinal ganglion cells applicable for patients suffering from retinitis pigmentosa. The proposed system is based on a novel...
A CMOS linear image sensor array with on-chip programmable signal processing (1995)
Schanz, M., Brockherde, W., Hosticka, B.J., Klinke, R.
This contribution presents an integrated linear image array with programmable on-chip sensor processing that has been fabricated in standard CMOS technology. The sensor is based on active pixel...
Ein CMOS Interface zur Energie- und Datenübertragung für kontaktlose Chipkarten (1995)
Hammerschmidt, D., Volkwein, B., Brockherde, W., Scherer, K., Hosticka, B.J.
Zum Aufbau kontaktloser Chipkarten mit Standard-Mikroprozessoren und planaren Spulen wird ein CMOS Interface IC vorgestellt, in dessen Empfänger-Schaltung die Gleichrichtung und die...
CMOS HF-Stromverstärker mit Spannungsgegenkopplung für niedrige Betriebsspannungen (1995)
Kokozinski, R., Hosticka, B.J., Brockherde, W.
Dieser Beitrag beschreibt neue analoge Schaltungstechniken für Bulk-CMOS sowie CMOS/SIMOX Technologien für sehr hohe Geschwindigkeiten bei gleichzeitig geringer Betriebsspannung. Die Untersuchungen...
Antialiasing and smoothing filters for sampled data signals using distributed RC-elements (1995)
Hammerschmidt, D., Machul, O., Brockherde, W., Hosticka, B.J.
An 3rd order active smoothing or antialiasing lowpass filter based on distributed RC-elements is presented together with a procedure for optimum design of this type of filter. When compared to...
Analoge Modulgeneratoren zur Unterstützung des analogen Schaltungsentwurfs (1995)
Andersch, M., Schardein, W., Vahrmann, R., Wedel, A., Hosticka, B.J.
Für den Aufbau eines Systems zur automatischen Generierung des Layouts von analogen Schaltungen wurde ein Satz häufig verwendeter Bauelemente und Module definiert und in einer kommerziellen...
An 1.5 V cyclic A/D converter CMOS technology (1995)
Hammerschmidt, D., Brockherde, W., Hosticka, B.J., Kokozinski, R.
A low-cost 1.5 V A/D converter has been realized in standard CMOS technology. It combines low-voltage switched-capacitor technique with a differential signal path. The conversion is programmable and...
Unüberwachte Selektion und Abstimmung von dyadischen Garborfiltern zur Textursegmentierung (1994)
Teuner, A., Pichler, O., Hosticka, B.J.
Einen wesentlichen Beitrag zur geeigneten Bestimmung von Merkmalräumen für die Bildsegmentierung und -klassifikation hat in der letzten Zeit die mehrkanalige spektrale Zerlegung eines Bildes...
Hahn, H., Timmermann, D., Hosticka, B.J., Rix, B.
One of the main problems of the CORDIC algorithm is the limited convergence domain, in which the functions can be calculated. Two different approaches can be employed to overcome this constraint:...
Temperaturkompensation von Sensorsystemen durch CMOS-Schaltungen (1994)
Hammerschmidt, D., Sprotte, A., Schnatz, F.V., Brockherde, W., Hosticka, B.J., ...
Es werden am Beispiel unterschiedlicher Sensorsysteme (Druck-, Magnetfeld-, Gas-Sensoren) verschiedene, an die Sensoren angepaßte Vorgehensweisen zur Temperaturkompensation erläutert. Die...
Rule-based adaptive configuration selection for analog design systems (1994)
Kokozinski, R., Hosticka, B.J., Klinke, R.
A configuration selection tool for rule-based analog IC design is presented. A fast determination of proper analog circuit configuration plays an eminent role in the initial design phase. This...
A parallel neural network emulator based on application-specific VLSI communication chips (1994)
Schwarz, M., Hosticka, B.J., Kesper, M., Scholles, M.
This work describes a parallel neural network emulator which combines use of application-specific VLSI communication processors and standard DSPs as programmable processing elements. Locally...
A parallel DSP-based neural network emulator with CMOS VLSI paket switching hardware. (1994)
Schwarz, M., Hosticka, B.J., Kesper, M., Richert, P., Scholles, M.
This work describes a parallel neural network emulator which uses standard DSPs and application-specific VLSI communication processors with an integrated hardware routing algorithm. The use of DSPs...
Neural network system for massively parallel signal processing (1994)
Richert, P., Hosticka, B.J., Scholles, M., Schwarz, M.
Future development of neural networks and their applications will be strongly affected by the availability of specialized hardware that meets the need for massively parallel communication and allow...
Hammerschmidt, D., Schnatz, F.V., Brockherde, W., Hosticka, B.J., Schlichting, V., Obermeier, E.
Es wird ein monolithisch integriertes CMOS-Drucksensorsystem vorgestellt. Die mit dem piezoresistiven Sensor integrierten Schaltungen ermöglichen neben der lastfreien Auslese der Brücke die...
A massively parallel neural net emulator (1994)
Schwarz, M., Hosticka, B.J., Kesper, M., Scholles, M.
This communication describes a massively parallel neural network emulator. Its hardware architecture is based on a near-neighbour mesh network topology. The emulator exhibits a global communication...
Magnetfeldsensorsystem in integrierter CMOS-Technologie (1994)
Sprotte, A., Brockherde, W., Hosticka, B.J., Buckhorst, R.F., Bosch, D.
Vorgestellt wird ein hoch empfindliches Magnetfeldsensorsystem in CMOS-Technologie. Mit diesem Sensorsystem können differentielle Magnetfelder in der Größe des Erdmagnetfeldes erfaßt werden. Die...
Interlaced sampling for noise reduction (1994)
Uhlemann, V., Hosticka, B.J., Brockherde, W.
New algorithms called interlaced-correlated-double- and -triple-sampling are presented that perform noise reduction in analog discrete-time circuits. Both are based on multiple...
An extension to the analytical Gabor expansion with applications in image coding (1994)
Teuner, A., Nielsen, P.A., Hosticka, B.J.
In this contribution we present an unified method that can be used to compute analytically the coefficients of the discrete non-orthogonal Gabor expansion for arbitrary type of orthogonal kernel....
Design methodology for analog monolithic circuits (1994)
Hosticka, B.J., Brockherde, W., Klinke, R., Kokozinski, R.
This contribution describes an approach to design methodology for analog monolithic circuits. The underlying philosophy relies on use of three description domains - functional, structural, and...
CMOS magnetic-field sensor system (1994)
Sprotte, A., Buckhorst, R.F., Brockherde, W., Hosticka, B.J., Bosch, D.
A magnetic-field sensor system integrated in CMOS technology with additional processing steps necessary for sensor fabrication is presented. The system contains a magnetoresistive permalloy...
A CMOS floating-point vector-arithmetic unit (1994)
Timmermann, D., Rix, B., Hahn, H., Hosticka, B.J.
This work describes a floating-point arithmetic unit based on the CORDIC algorithm. The unit computes a full set of high level arithmetic and elementary functions: multiplication, division, (co)sine,...
Schlichting, V., Lossy, R., Graf, N., Obermeier, E., Hammerschmidt, D., Schnatz, F.V., ...
In diesem Beitrag wird ein integrierter piezoresistiver Silizium-Drucksensor vorgestellt, bei dem alle für die Kalibrierung relevanten Parameter (Offsetspannung, Ausgangssignal,...
Application-independent hierarchical synthesis methodology for analogue circuits (1994)
Wittmann, R., Schardein, W., Hosticka, B.J., Schanz, M., Vahrmann, R., Kern, S.
This paper presents a new strategy for synthesis of analogue circuits in expert systems with an expert oriented approach to solving analogue design problems. Analogue circuits are hierarchically...
Analoge CMOS-Schaltungen für niedrige Versorgungsspannungen. (1994)
Brockherde, W., Hammerschmidt, D., Hosticka, B.J., Schnatz, F.V.
Analoge Schaltungen, die in Standard-CMOS-Technologien mit linearen Kondensatoren gefertigt werden, können ohne weiteres auch bei sehr niedrigen Versorgungsspannungen betrieben werden. Die im...
Analog module generators for effective design assistance. (1994)
Schardein, W., Andersch, M., Hosticka, B.J., Vahrmann, R., Wedel, A.
A set of analog device and macro module generators has been implemented in the GDT environment. The generators are technology and design rules independent and can assist effectively design of analog...
1.2 Volt CMOS readout electronics for capacitive sensors (1994)
Schnatz, F.V., Brockherde, W., Dudaicevs, H., Hosticka, B.J.
A CMOS readout electronics for capacitive sensors operating at 1.2 Volt single supply is presented. It is based on a low voltage SC circuit technique and use of on-chip clock voltage doubler. The...
VLSI Text-to-Speech Schaltkreis für ein Vorlesegerät (1993)
Buchweitz, D., Erler, O., Gäbler, U., Hirschfeld, D., ...
Der CMOS-VLSI-Sprachprozessorschaltkreis VOICE setzt Texte, die im ASCII-Kode vorliegen, in synthetische deutsche Sprache mit unbegrenztem Wortschatz um. Der Schaltkreis ist unter anderem für den...
Potential of microelectronics for mechatronics (1993)
This contribution investigates the impact of microelectronics on modern mechanical engineering and its synergy effect. State-of-the-art will be shortly surveyed and future development will be...
Overflow effects in redundant binary number systems (1993)
Hosticka, B.J., Timmermann, D.
This work describes a specific overflow behaviour encountered when working with redundant binary numbers, possibly yielding wrong results. This peculiarity is not encountered in conventional number...
Ein On-Chip-Kommunikationsprozessor für die parallele Signalverarbeitung (1993)
Eßer, W., Frommhagen, K., Göbel, A., Hermann, R., Hosticka, B.J., Stenske, R., ...
In zunehmendem Maße werden rechenintensive Algorithmen für die Echtzeitsignalverarbeitung auf parallele heterogene Multiprozessorsysteme abgebildet. Dabei kommen häufig spezielle, für bestimmte...
Nodal chip for parallel neural signal processing (1993)
Kesper, M., Richert, P., Scholles, M., Schwarz, M., Hosticka, B.J.
This work describes a neural network chip which allows combining massive parallel interneural communication with sophisticated intraneural computation and can be used for construction of neural...
Gleitkomma-Prozessor für rechenintensive Echtzeitanwendungen (1993)
Timmermann, D., Rix, B., Hosticka, B.J.
Zur Lösung rechenintensiver Aufgaben, z.B. in der Signalverarbeitung, wurde ein arithmetischer Prozessor entwickelt, der herkömmliche Signalprozessoren und Risc-Mikroprozessoren an Leistung weit...
An emulator for biologically-inspired neural networks (1993)
Richert, P., Hosticka, B.J., Kesper, M., Scholles, M., Schwarz, M.
This work presents an emulator that has been developed for real-time algorithm and architecture exploration and verification of biologically-inspired neural networks. It can implement a wide range of...
Digital programmable pressure sensor with on-chip CMOS signal processing and data storage (1993)
Schlichting, V., Hammerschmidt, D., Hosticka, B.J., Obermeier, E., Pollak-Diener, G., Schnatz, F.V.
Monolithic sensors can greatly benefit from on-chip electronics since modern signal processsing has a potential to contribute significantly to improving overall sensor performance. This is important...
A CMOS piezoresistive pressure sensor with on-chip programming and calibration (1993)
Brockherde, W., Hammerschmidt, D., Hosticka, B.J., Obermeier, E., Schnatz, F.V.
A pressure sensor with on-chip programmable readout and calibration electronics is presented. It features a 30 bit programming capability of sensitivity, offset, stabilized bias, as well as first and...
CMOS magnetic-field sensor system (1993)
Sprotte, A., Buckhorst, R.F., Brockherde, W., Bosch, D., Hosticka, B.J.
A magnetic-field sensor system integrated in CMOS technology with additional processing steps necessary for sensor fabrication is presented. The system contains a permalloy magnetoresistive...
A CMOS bandgap reference for low voltage applications (1993)
Hammerschmidt, D., Nielsen, P.A., Schnatz, F.V., Brockherde, W., Hosticka, B.J.
A bandgap reference circuit which operates at supply voltages down to 1.2V is presented. It offers a reference voltage of 82mV and a reference current of 2myA with a temperature dependence of less...
Biologically-inspired artificial neurons. Modeling and applications (1993)
Scholles, M., Hosticka, B.J., Richert, P., Schwarz, M.
Currently used neural networks employ mostly simple neuron models that greatly differ from the "real" biological neurons. To ensure progress in biology-based neural processing, more advanced neuron...
Adaptive Gabor transformation for image processing (1993)
In this correspondence, we present an algorithm that computes the Gabor coefficients of an image. An adaptive filter that employs the complex least mean-squares (LMS) algorithm for their computation...
Adaptive filter for two-dimensional Gabor transformation and its implementation (1993)
An adaptive filter that enables coefficient computation of the Gabor expansion while employing the least mean-squared algorithm for complex signals is described. A significant simplification of the...
24 Bit CMOS Gleitkomma Vektorarithmetik Chip (1993)
Hahn, H., Hosticka, B.J., Rix, B., Timmermann, D.
Es wird eine CMOS Realisierung einer Vektorarithmetikeinheit zur Verarbeitung von Zahlen im IEEE-754 Gleitkommaformat (24 Bit Mantisse, 8 Bit Exponent) vorgestellt, der IMSCOR24. Dieser Chip wurde...
A technology independent module generator for CLA adders (1992)
Hosticka, B.J., Maas, O., Schardein, W., Tröster, G., Weghaus, B.
A technology indepenent generator for CLA adders in BiCMOS and CMOS is presented. It allows full automatic construction of past parallel adders with arbitrary word length and device sizing. The...
Secant distance analysis for corner point detection (1992)
In this paper a new algorithm for corner point detection based on object contours (chain codes) will be presented. The algorithm, which is well suited for high speed VLSI hardware implementation,...
Schaltungstechniken und Architekturen für die parallele Signalverarbeitung in BiCMOS-Technik (1992)
Eßer, W., Hosticka, B.J., Schroth, K., Zimmer, G.
Dieser Beitrag zeigt auf, welche Vorteile sich durch den Einsatz einer hochwertigen BiCMOS-Kombinationstechnologie, und damit durch die gemeinsame Nutzung von spannungsgesteuerten MOS- und...
Rule-based analog circuit design (1992)
Hosticka, B.J., Klinke, R., Kokozinski, R., Münster, I.
A prototype of rule-based environment for analog integrated circuit design is presented. It features a hierarchical design style, multifunctionality, and adaption capability for its knowledge bases....
Programmable hardware-architecture for real-time pattern-recognition systems (1992)
This paper presents some new ideas concerning implementation of real-time pattern recognition systems for visual inspection, automated assembling systems, and pattern recognition research systems....
Hosticka, B.J., Mokwa, W., Schöneberg, U., Vogt, H.
Gas-sensitive MOS capacitors with on-chip readout electronics are investigated. The use of these capacitors in combination with switched capacitor circuitry enables a.c. operation of the device to...
Neuronale Netze, und was kommt danach? (1992)
In jüngster Zeit wird parallelen Rechnerarchitekturen besondere Aufmerksamkeit gewidmet, da sie die Verarbeitungskapazität in der Daten- und Signalverarbeitung erhöhen können. Es sind vor allem...
A low latency time CORDIC algorithm with increased parallelism (1992)
Hahn, H., Hosticka, B.J., Timmermann, D.
In this contribution we present several methods for increasing the speed of the CORDIC algorithm. First we develop an improved method which guarantees a constant scale factor when employing redundant...
Integrierte Sensorelektronik für Mikrosystem-Anwendungen (1992)
Brockherde, W., Hosticka, B.J., Klinke, R., Schnatz, F.V.
Dieser Beitrag befaßt sich mit integrierter Sensorelektronik für Mikrosystem-Anwendungen. Durch die Integration der Elektronik können Auslese- und Schnittstellenschaltungen, die optimal an die...
Integrated sensor electronics, the link between sensor and system (1992)
Brockherde, W., Hosticka, B.J.
This contribution deals with integrated sensor electronics for microsystem applications. The monolithic integration of sensor electronics renders realization of readout and interface circuitry...
Design and applications of tunable analog BiCMOS circuits (1992)
Fichtel, J., Hosticka, B.J., Schardein, W.
In this communication we discuss the design, merits, and applications of tunable analog BiCMOS circuits. Although the BiCMOS technology offers higher design flexibility due to the presence of more...
Cordic processor architectures (1992)
Böhme, J.F., Hahn, H., Hosticka, B.J., Timmermann, D.
As CORDIC algorithms receive more and more attention in elementary function evaluation and signal processing applications, the problem of their VLSI realization has attracted considerable interest....
A CORDIC-based floating point arithmetic unit (1992)
Hahn, H., Hosticka, B.J., Rix, B., Timmermann, D.
A floating-point arithmetic unit based on the CORDIC algorithm is described. It computes a wide range of arithmetic, trigonometric, and hyperbolic functions and achieves a normalized peak performance...
Circuit and system design for silicon microsensors (1992)
This contribution presents recent advances in CMOS electronics for silicon and silicon-based sensors. It describes the principles of sensor instrumentation and features practical solutions...
Applications of mixed analog/digital design (1992)
Design of a large mixed analog/digital high-performance system on a silicon chip is a challenge for any IC designer, but it can become easiliy a nightmare. It is, therefore, very important to know...
Hahn, H., Hosticka, B.J., Timmermann, D.
In adaptive digital signal processing, fast multiplication is one of the most important operations and is implemented as an array multiplier in a standard signal processor. For the realisation of...
An adaptive filter for two-dimensional Gabor transformation (1992)
An adaptive filter for computation of the Gabor transformation of images is presented. The filter design is based on the LMS algorithm for complex signals. A significant simplification of the filter...
System and chip design for neural and auditory signal processing (1991)
Speech recognition and understanding is one of the most difficult tasks to be carried out by machines while it is readily performed by humans. Although modern electronic and computer engineering has...
A programmable CORDIC chip for digital signal processing applications (1991)
Schmidt, G., Hahn, H., Hosticka, B.J., Timmermann, D.
A chip implementing the COordinate Rotation DIgital Computer (CORDIC) algorithm is described. It contains a 10-MHz 16-b fixed-point CORDIC arithmetic unit, 2-kb RAM, a controller, and I/O registers....
Eine Photodetektor-Matrix mit Ausleseelektronik in Standard-CMOS-Technologie (1991)
Brockherde, W., Hosticka, B.J., Klinke, R., Zimmer, G.
Die Integration voll kompatibler Sensoren, die ohne zusätzliche Prozeßschritte in CMOS-Technologie realisiert werden können, bietet die Möglichkeit die Sensoren zusammen mit der Ausleseelektronik...
Hosticka, B.J., Mokwa, W., Schöneberg, U., Vogt, H.
Gas-sensitive MOS capacitors with on-chip readout electronics are investigated. The use of these capacitors in combination with switched capacitor circuitry enables a.c. operation of the device to...
A new addition scheme and fast scaling factor compensation methods for CORDIC algorithms (1991)
Hahn, H., Hosticka, B.J., Rix, B., Timmermann, D.
As CORDIC algorithms attract more and more attention in elementary function evaluation and signal processing applications, the problem of their VLSI realization has drawn considerable interest. In...
Neural networks and genetic algorithms as programming paradigm for a new CMOS-array computer (1991)
Hosticka, B.J., Kesper, M., Richert, P., Scholles, M., Schwarz, M.
Artificial neural networks (ANN) and genetic algorithms (GA) have turned out to play an important role in building and programming of parallel computers. Especially fine granulated massively parallel...
Neue Architekturen für die Signalverarbeitung (1991)
In diesem Beitrag werden neue Architekturen der Signalverarbeitung vorgestellt und diskutiert. Besondere Aufmerksamkeit wird dabei parallelen Architekturen gewidmet, die die heutigen Engpässe bei...
A low latency time CORDIC algorithm with increased parallelism (1991)
Hahn, H., Hosticka, B.J., Timmermann, D.
In this contribution we present several methods for increasing the speed of the CORDIC algorithm. First we develop an improved method which guarantees a constant scale factor when employing redundant...
Low-drift gas sensor with on-chip instrumentation (1991)
Hosticka, B.J., Mokwa, W., Schöneberg, U.
Although results on CMOS compatible gas sensors have been published during the recent years, non of them have had on-chip electronic circuitry. In this work a hydrogen gas sensor device with an...
Hosticka, B.J., Kesper, M., Richert, P., Scholles, M., Schwarz, M.
Wesentliche Probleme bei der Realisierung künstlicher neuronaler Netze sind die freie Wahl des Neuronenmodells und die Möglichkeit der flexiblen Verbindung zwischen einer hohen Anzahl von Neuronen....
Eine intelligente sensorintegrierte Vorverarbeitungs-Einheit für neuronale Netze (1991)
Wagner, G., Büddefeld, J., Hosticka, B.J., Klinke, R.
Ein neuartiges Konzept für parallele Bildsensorik und Bildvorverarbeitung als Schnittstelle für künstliche neuronale Netze wird vorgestellt: Die Architektur basiert auf einem parallelen...
Hardware-Algorithmen und Architekturen für die arithmetikintensive Signalverarbeitung (1991)
Hahn, H., Hosticka, B.J., Rix, B., Timmermann, D.
Diskutiert wird die Möglichkeit, aufwendige arithmetische Berechnungen direkt als Hardware-Algorithmus zu realisieren. Nach einem Vergleich der dazu zur Verfügung stehenden Alternativen zeigt sich...
Entwurf und Simulation künstlicher neuronaler Netze (1991)
Büddefeld, J., Hosticka, B.J., Richert, P., Scholles, M.
Zukünftige Möglichkeiten von Wafer-Scale Integration in Verbindung mit einer Sub-Mikron-Technologie ermöglichen erstmals die Realisierung neuronaler Netze (NNe) mit großer Komplexität. Bisher...
Design and applications of tunable analog BiCMOS circuits (1991)
Fichtel, J., Hosticka, B.J., Schardein, W.
In this communication we will discuss design, merits, and applications of tunable analog BiCMOS circuits. Although the BiCMOS technology offers higher design flexibility due to presence of more types...
A CMOS-readout-amplifier for instrumentation applications (1991)
Hosticka, B.J., Schnatz, F.V., Schöneberg, U.
In the recent years enormous progress has been made in integration of sensors and electronics on the same silicon substrate. So a strong demand for incorporated instrumentation amplifiers has arisen....
Hosticka, B.J., Kesper, M., Richert, P., Scholles, M., Schwarz, M.
We present a scalable MIMD computer system which was designed to be used as a neurocomputer. it is capable of emulating different types of neurons including complex biologically motivated models...
CASSY Werkzeuge zur formalen Darstellung und Verifikation von Signalverarbeitungssystemen (1991)
Büddefeld, J., Hosticka, B.J., Moraga, C.
Das Programmpaket CASSY ermöglicht eine schnelle, interaktive Verifikation von Signalverarbeitungssystemen (d.h. deren Architekturen und Algorithmen), basierend auf der formalen Darstellung und...
An intelligent sensor integrated preprocessing facility for neural networks (1991)
Büddefeld, J., Hosticka, B.J., Klinkel, R., Wagner, G.
An innovative concept for parallel image sensing and preprocessing as an interface to artificial neural networks is presented: The architecture is based on a parallel preprocessor system, integrated...
Simulation of artificial neural networks with biological features based on building blocks (1990)
Büddefeld, J., Hosticka, B.J., Richert, P., Scholles, M.
Exact modeling and fast simulation of neural networks using conventional von-Neumann computers present a great challenge. Due to inherent parallelism of such networks extreme computational efficiency...
Brockherde, W., Hosticka, B.J., Manoli, Y., Mokwa, W.
Recent developements in silicon technology allow the implementation of nonelectrical functions and CMOS-electronics on the same silicon substrate. Thus microsensors and microactuators can be merged...
Rotation- and translation-invariant pattern recognition based on distance transformations (1990)
In this paper a statistical approach for pattern recognition, based on a distance transformation, will be presented. The algorithm enables multiclass rotation- and translation invariant pattern...
A novel readout technique for capacitive gas sensors (1990)
Hosticka, B.J., MacLay, G.J., Schöneberg, U., Zimmer, G.
In this communication we propose a novel readout technique for capacitive gas sensors. It uses periodically operated analog switches together with capacitors and operational amplifiers. These...
Noise filtering for readout electronics (1990)
Buttler, W., Hosticka, B.J., Lutz, G.
Filtering and signal processing is important for readout systems. The filtering principle we present is suitable for integrated readout electronics. The transfer function is independent of the...
Neural based multi-sensory system (1990)
Hosticka, B.J., Mokwa, W., Richert, P.
In this contribution we present an advanced concept of neural based multi-sensory systems. It realizes two important features: on the one hand the neural net is trained what the sensors are supposed...
A JFET-CMOS radiation-tolerant charge-sensitive preamplifier (1990)
Buttler, W., Hosticka, B.J., Lutz, G., Manfredi, P.F.
A monolithic charge-sensitive preamplifier based on n-channel junction field-effect transistors (JFET's) and p-channel MOS has been realized for applications with multielectrode detectors in...
Hosticka, B.J., Mokwa, W., Schöneberg, U.
Despite a long period of more than one decade MOS gas sensors are still suffering from long-term instabilities. We present a new way of overcoming some of the problems by incorporating on-chip analog...
High-speed analog CMOS pipeline system (1990)
Caldwell, A., Hervas, L., Kötz, U., Sippach, B., Hosticka, B.J., Möschen, J.
We present a switched-capacitor readout system for high speed analog signals. It consists of a 10 MHz four-channel delay-line chip with 58 samples per channel and a 12 channel buffer chip with a...
DSP algorithms and VLSI system design (1990)
Digital signal processing (DSP) is steadily gaining importance, especially since signal processors and corresponding modules have become commercially available. While theoretical foundations of the...
Distributed processing hardware for realization of artificial neural networks (1990)
Hess, G., Hosticka, B.J., Kesper, M., Richert, P., Schwarz, M.
In this contribution we present an advanced concept of neural hardware that realizes two important features: 1. each neuron possesses membrane potential learnable synaptic weights and delays,...
Development of the front end electronics for the ZEUS high resolution calorimeter (1990)
Caldwell, A., Ritz, S., Sciulli, F., Sippach, W., Kötz, U., Hosticka, B.J., ...
The design of the pipelined data acquisition system for the high resolution ZEUS calorimeter is described. Results of measurements with prototype electronics are given.
Concept of neural hardware for parallel image processing (1990)
Hosticka, B.J., Kesper, M., Richert, P., Schwarz, M.
This paper presents a new approach to the distributed processing hardware for neural nets. Our goal is to develop a VLSI chip that can simulate different types of neurons and communicate with other...
A CMOS readout system for very large detector capacitances (1990)
Fent, J., Hosticka, B.J., Oberlack, H., Schöneberg, U., Zimmer, G.
In this contribution we present readout electronics for a liquid-argon calorimeter. It has been designed and optimized for operation at cryogenic temperatures and it is integrated in an n-well 2...
CMOS readout electronics for capacitive acceleration sensors (1990)
Buckhorst, R., Hosticka, B.J., Seidel, H.
In this contribution we will present a readout electronics for a capacitive acceleration sensor, both fabricated in silicon. The sensor is formed by an arrangement of a sensing capacitor and a...
A CMOS-readout-amplifier for instrumentation applications (1990)
Hosticka, B.J., Schnatz, F.V., Schöneberg, U.
In recent years enormous progress has been made in integration of sensors and electronics on the same silicon substrate. Hence, a strong demand for incorporated instrumentation amplifiers has arisen....
CMOS operational amplifier with nearly constant settling time (1990)
Hosticka, B.J., Klinke, R., Zimmer, G.
An operational amplifier with a settling time nearly independent of the signal amplitude and the capacitive load has been realised in CMOS technology. It uses an additional circuit to inject an extra...
CMOS analog front-end for ripple-control receivers (1990)
Rainer, E., Brockherde, W., Hosticka, B.J., Münster, I.
A microcontroller-compatible analog front-end for ripple-control receivers is described. It serves to demodulate ripple-control signals transmitted by public electrical utilities over 50 Hz power...
BiCMOS circuits for DPCM coders in HDTV systems (1990)
Eßer, W., Hosticka, B.J., Rothermel, A., Schardein, W., Tröster, G.
Prototype chips have been designed and fabricated which prove that a 2.5 micrometer BiCMOS process is feasible for implementation of DPCM coders operating at HDTV clock frequencies, i.e. 54 MHz. As a...
A BICMOS analog adaptive filter (1990)
Fichtel, J., Hosticka, B.J., Sieber, P.
An analog adaptive filter has been fabricated in BiCMOS technology. The filter combines CMOS sampled-data storage and analog bipolar multiplication. The experimental prototype realizes linear LMS...